How do u get to use the Jedi Character on the game i haven't actually got the game but i'm getting it very soon and i have got the original game which rocks i especially like the clone assault troops with their E.M.P launchers etc so if anyone could tell how hard or easy it is to be able to use them?

Yep!!! The thing about Jedi is that you must not rush at any one to slash like crazy or you'll get shot down really quick. The best thing to do is just blocking till the enemy runs out of ammo, other troops kills'em, gets close enough to slash them by yourself, or you have many ones in front to sabre throw'em all to hell.

I've found that Darth Vader is a unique Jedi. Though his stamina bar runs out quickly, he can float as his second jump. I havent found it as usefull as I wanted it too, though.

That is actually FLIGHT. Vader, and the Emperor both can fly for short distances. They control similar to the Jet troopers. Point your right stick up, and you will fly high up into the air.

Vader is also the only Jedi/Sith that can throw his lightsaber while in the air.

Sweetest Darth Vader moment was on hoth, as my friend came through in a damaged snowspeeder attacking my AT-AT walkers, and as I was in flight mode with Vader, I executed an air attack on the snowspeeder, slashing it with my lightsaber and destroying it in midair.